Water purifying apparatuses

ABSTRACT

The present invention provides a purifying apparatus, which is comprised of a mounting head, a reversing valve and a filter, wherein the mounting head has an inlet for connecting to the water supply pipes; said reversing valve includes a valve seat and a valve cartridge, therein the valve seat is fastened on the mounting head coordinating to the inlet and outlet, and the valve cartridge is set on the seat swinging between the valve seat and the mounting head coordinating to the inlet and the outlet of the mounting head; the replaceable filter is secured on the mounting head so as to mate the inlet and outlet of the filter to the inlet and outlet of the mounting head exactly, and by turning the filter the valve cartridge can be turned for controlling the inlet of the mounting head cutting in or off the inlet of the valve seat; and the inlet of the filter housing is connected to the outside wall of the filter element, and the outlet of it is connected to the center of the filter element; as tending to replace the filter, just need to twist off the filter cartridge to take it away from the mounting head and as the filter is turned down, the inlet of the valve cartridge is turned away from the inlet of the valve seat, so the water flowing way is blocked.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a water purifying apparatus and more especially to an inline water purifying device that facilitates to replacing filter cartridge without cutting off the flow pipe.

2. Description of Prior Art

In accordance with the conventional technology, there is a water purifying apparatus connected into the water supply pipe with the inlet, so that the raw water is led into the apparatus via the water supply system, and flow through the filter cartridge as in purifying treatment, then the clarified water will flow out from the outlet even for drinking directly. Due to the inline connection, the apparatus is easy to be mounted to be a part of the water supply pipe line actually, so it can be hidden into a cabinet without occupying extra space.

But after using a certain term or period, said water purifying apparatus need replace the filter cartridge, in this case, at the most of the time, the apparatus has to be dismantled from the pipe line for the replacement, for cutting off the water supply in this time, setting upon a valve in the flow pipe must be done, in order to turn off before replacing the filter cartridge, if not, as dismounting the apparatuses, the water will discharge from the water pipe. On the other hand, if frequently dismounted, the seals of the inlet and outlet of the water purifying device are easy to be brought to losing function to cause leakage, and often dismounting also makes the customer feel boring, further to dislike to use it.

OBJECTS AND SUMMARY OF THE INVENTION

It is therefore the main object of the present invention to provide an inline water purifying apparatus that facilitates to replacing filter cartridge without cutting off the flow pipe.

For archiving the objects, the technical solution provided by the present invention is to provide a water purifying device, which is comprised of a mounting head, a reversing valve and a filter; wherein the mounting head has an inlet connecting to the water supply pipes; said reversing valve includes a valve seat and a valve cartridge, therein the valve seat is fastened on the mounting head coordinating to the inlet and outlet, and the valve cartridge is set on the seat swinging between the valve seat and the mounting head coordinating to the inlet and the outlet of the mounting head; the replacable filter is secured on the mounting head so as to mate the inlet and outlet of the filter to the inlet and outlet of the mounting head exactly, and by turning the filter the valve cartridge can be turned for controlling the inlet of the mounting head connecting to or cutting off the inlet of the valve seat; and the inlet of the filter housing is connected to the outside wall of the filter element, and the outlet of it is connected to the center of the filter element.

Said valve seat is a column base with a blind hole built upon the bottom side for containing said valve cartridge, meanwhile said blind hole extends its inner side to and via a through-hole to form a “7”-shaped water exit passage, and another through-hole set upon the opposite side to form a converted “7”-shaped entrance passage, and said valve seat extends two lugs separately on the opposite outer sides for locating on the mounting head.

Said valve cartridge is a disk with two shaft heads extended from the center to the both sides—up and down separately, therein the upper shaft head is used to fit into the blind hole of the valve seat coordinating to the outlet with an outlet built upon the one side of the upper shaft head; and the lower shaft head has a central blind hole connected to the one side outlet of the upper shaft head to form said converted “7”-shaped exit passage; and said disk of the spool extends a side shaft built on one side of the lower shaft head to form an inlet at their center axels connecting to the inlet of the valve seat.

Said side shaft extends a dog lug from the outside wall.

Said lower shaft head of the valve seat has a dog lug built upon the one side at the disk.

Said filter cartridge includes a filter housing and a filter element; said filter housing is a cylindrical shell which has a bottleneck built upon the top side for holding in the retaining socket of the mounting head, and the inlet and outlet and a slot built on coordinating to the lower shaft head and side shaft of the valve cartridge, in which said inlet and outlet are connected to the inner hollow cave of the filter housing holding a filter element in; the filter element having a hollow center is covered with an upper cap and a bottom cap separately; said upper cap has an outlet spout upward connecting to the inside center of the filter element with the bottom end, and the up end is docked to the outlet of the valve seat.

Said mounting head has bevel lugs built on the bottom inside wall coordinating to the bevel flanged segments for mating.

Said mounting head has retaining slots built upon the inside for locating the lugs of the valve seat.

Said mounting head also has a locating surface for locating the valve cartridge, on which there are a through-hole and a through-slots; said through-slot extends out locating silent point built upon the side.

Said mounting head and said filter have several pair of mated grooves and lugs built upon the bevel lugs and bevel flanged segments separately for gearing together.

Due to applying said technology, such as the dismounted design of the present invention, said mounting head is lined on the flow pipe, as using a certain term and tending to replace the filter cartridge, just need to twist off the filter and replace a new one at all; on the other hand, due to employing a reversing valve in said mounting head, in which the valve cartridge can be turned relatively, when securing in place of the filter on the mounting head, the filter will hold the inlet of the filter element to aim to the inlet of the valve seat to form a flow passage; when turning off the filter, the filter element of the filter may bring the valve cartridge to turn together to move the inlet of the valve cartridge away from the inlet of the valve seat, such as cutting out the flow way, in order to prevent the flow pipe from jetting out water, therefore carrying out replacing filter without turning off the flow pipe individually. So, as replacing the filter, do not need to dismount the mounting head from flow pipe, the operation is simplified, the inlet and outlet of the mounting head are kept in tight seal, hence it overcomes the shortcomings of the prior art without leakage on there.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view of the present invention.

FIG. 2A is a solid view showing the mounting head of the present invention.

FIG. 2B is a topside view showing the mounting head of the present invention.

FIG. 2C is a sectional view showing the mounting head of the present invention.

FIG. 3A is a solid view showing the valve seat of the present invention.

FIG. 3B is a bottom side view showing the valve seat of the present invention.

FIG. 3C is a sectional view showing the valve seat of the present invention.

FIG. 4A is a solid view showing the valve cartridge of the present invention.

FIG. 4B is a bottom side view showing the valve cartridge of the present invention.

FIG. 4C is a sectional view showing the valve cartridge of the present invention.

FIG. 5A is a bottom side view showing the filter cartridge of the present invention.

FIG. 5B is a sectional view showing the filter cartridge of the present invention.

FIG. 5C is a sectional view showing the filter cartridge in other side of the present invention.

FIG. 6 is a scheme showing the cutting-on pipe line of the present invention.

FIG. 7 is a scheme showing the cutting-off pipe line of the present in invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Referring to FIG. 1 to FIG. 5, a water purifying apparatus provided by the present invention is comprised of a mounting head A, a reversing valve B and a filter C.

Referring to FIG. 2A to FIG. 2C, said mounting head A has an inlet A1 and outlet A2 built upon the both sides secured with joint A3 respectively and oppositely (as shown in FIG. 1), said joint A3 is used for joining the mounting head to the flow pipe rapidly, and there are bevel lugs A4 built upon the inside wall of the bottom portion of the mounting head A, and the mounting head A has a retaining slot A5 for holding said valve seat 1 of the reversing valve B, and a locating surface A6 at proper position for locating the spool 2 of the reversing valve B, on which there are a through-hole A7 and through-slots A8 built, said through-slot A8 extends out locating silent point A9 built upon the side.

Said reversing valve B is comprised of a valve seat 1 and a valve cartridge 2.

Referring to FIG. 3A and FIG. 3C, said valve seat 1 is a column base extending two lugs 11 separately on the opposite out sides for locating in the retaining slot A5 of the mounting head A, and having a blind hole 12 built upon the bottom side for containing said valve cartridge 2, meanwhile said blind hole 12 is connected to the one out side via a through-hole to form a “7”-shaped outlet 13, and another through-hole set upon the opposite side to form a converted “7”-shaped inlet 14, and there are two ring grooves 15 built upon the bottom side for holding O-rings for seal.

Referring to FIG. 4A to FIG. 4C, said valve cartridge 2 is a disk 21 with two shaft heads 22 23 extended from the center to the both sides—up and down separately, therein the upper shaft head 22 is used to fit into the blind hole 12 of the valve seat 1 coordinating to the outlet 13 with an outlet 221 built upon the one side of the upper shaft head 22; and the lower shaft head 23 has a central blind hole 231 connected to the one side outlet 221 of the upper shaft head 22 to form said converted “7”-shaped exit passage; and said disk 21 of the valve cartridge 2 extends a side shaft 24 built on one side of the lower shaft head 23 to form an inlet 241 at their center axels connecting to the inlet 14 of the valve seat 1; said side shaft 24 extends a dog lug 242 from the outside wall, and said lower shaft head 23 of the valve seat 2 has a downward dog lug 25 built upon the bottom side at the disk 21.

Said filter C includes a filter housing 3 and a filter element 4.

Referring to FIG. 5A to FIG. 5C, said filter housing 3 has a bottleneck 31 built upon the top side for holding in the retaining socket of the mounting head A, and coordinating to the lower shaft head 23, the side shaft 24 and the dog lug 25 of the valve cartridge 2, the inlet 33, outlet 32 and the slot 34 built on the top side and connecting to the hollow cave 35; the hollow filter housing 3 is covered with a bottom cover 36 for holding the filter element 4 in; on the other hand, said filter housing 3 has bevel flanged segments 37 along the edge on the top end above the bottleneck 31 coordinating to bevel lugs A4 of the mounting head A.

Said filter element 4 having a hollow center is covered with an upper cap 41 and a lower cap 42 separately both; said upper cap 41 has an outlet spout 411 upward connecting to the inner hollow center with the bottom end, and the up end is docked to the outlet 32 of the valve seat 3.

Referring to FIG. 6, in combination, the valve seat 3 is located into the mounting head A by fitting the two lugs 31 into the retaining slot A5 firstly; the movable valve cartridge 2 is located between the valve seat 3 and the mounting head A by fitting the upper shaft head 22 into the blind hole 32 and backing up the locating surface A6, and the lower shaft head 23, side shaft 24 and the dog lug 25 of the valve cartridge 2 are stretched out from the through-hole A7 and the through-slot A8 of the locating surface A6 of the mounting head A to the bottom side; said filter element 4 located into the inside of the filter housing 3 with the upper and lower covers, and secured by the bottom cover 36, so that the coordinated lower shaft head 23 and side shaft 24 and the dog lug 25 are respectively extended into the corresponded inlet 33, outlet 32 and the slot 34 holding the dog lug 25 of said filter housing 3, then secure the filter housing 3 on retaining socket constructed of the bevel lugs 37 of the valve seat 1, by the matched dog lug 25 and the slot 34, the filter housing 3 can bring the filter element 4 to turn together, further to take the advantage of the locating silent points A9 on the through-slots A8 locating the dog lug 242 of the side shaft 24 and the dog lug 25 synchronously, the filter housing 3 is retained on the base A, meanwhile the filter element 2 is just placed on cutting-in state—the inlet 241 exactly aims to the inlet 12 of the valve seat 1, the water can be led in freely.

Certainly, all said pieces should be sealed on the contacting surfaces (with sealing washes and O-rings) as in combination process.

As in purifying treatment, the water flowing in the flow pipe firstly enters the flow passage of the reversing valve B via the inlet 11 of the valve seat 1, then pass through the on-state inlets 241 and 12 of the valve cartridge 2 and the valve seat 1, via the inlet 33 of the filter housing 3 enter to the inner cave 35 to fill out the outside space of the filter element 4, then under the water pressure, the row water continuously permeates into the hollow center of the filter element 4, next along the outlet spout 411 set upon the top end of the filter element 4, the clarified water is led out, then via the outlets 32, 221 and 13 of the filter housing 3, the valve cartridge 2 and the valve seat 1, finally pass through the outlet A2 of the mounting head A flow into the down pipe for tapping out.

Referring to FIG. 7, as tending to replacing the filter C, just need to twist off the filter C to take it away from the mounting head A to replace with a new filter cartridge, and as turning said filter housing 3, synchronously turning the valve cartridge 2 under the driving of the filter housing 3, by the dog lug 24 of the valve cartridge 2 facilitating to the filter housing 3 to turn the valve cartridge 2, so that the inlet 241 of the valve cartridge 2 is turned away from the inlet 14 of the valve seat 1 falling into cutting-off state, when the valve cartridge 2 is turned to get the locating surface A6 on the another end of the through-slot A8, the silent points A9 will locate the side shaft 24, meanwhile and the dog lug 25 in another slot A8, the filter housing 3 can be taken away. In this case, the valve cartridge 2 is in cutting-off state, so the water coming from the flow pipe is blocked without any jetting out or leakage, even if not turning off the flow pipe, the water will not jet out to carry out simply replacing filter goal.

Additionally, for improving the tight matching, said mounting head A and said filter C have several pair of mated grooves and lugs built upon the bevel lugs A4 and bevel flanged segments 37 separately. 

1. a purifying apparatus comprised of a mounting head, a reversing valve and a filter cartridge; wherein the mounting head has an inlet for connecting to the water supply pipes; said reversing valve includes a valve seat and a valve cartridge, therein the valve seat is fastened on the mounting head coordinating to the inlet and outlet, and the valve cartridge is set on the seat swinging between the valve seat and the mounting head coordinating to the inlet and the outlet of the mounting head; the replaceable filter is secured on the mounting head so as to mate the inlet and outlet of the filter to the inlet and outlet of the mounting head exactly, and by turning the filter the valve cartridge can be turned for controlling the inlet of the mounting head cutting in or off the inlet of the valve seat; and the inlet of the filter housing is connected to the outside wall of the filter element, and the outlet of it is connected to the center of the filter element;
 2. a purifying apparatus as claimed in claim 1, wherein said valve seat is a column base with a blind hole built upon the bottom side for containing said valve cartridge, meanwhile said blind hole is connected to the one side via a through-hole to form a “7”-shaped exit passage, and another through-hole set upon the opposite side to form a converted “7”-shaped entrance passage, and said valve seat extends two lugs separately on the opposite out sides for locating on the mounting head;
 3. a purifying apparatus as claimed in claim 1, wherein said valve cartridge is a disk with two shaft heads extended from the center to the both sides—up and down separately, therein the upper shaft head is used to fit into the blind hole of the valve seat coordinating to the outlet with an outlet built upon the one side of the upper shaft head; and the lower shaft head has a central blind hole connected to the one side outlet of the upper shaft head to form said converted “7”-shaped exit passage; and said disk of the valve cartridge extends a side shaft built on one side of the lower shaft head to form an inlet at their center axels connecting to the inlet of the valve seat;
 4. a purifying apparatus as claimed in claim 3, wherein said mounting head has bevel lugs built on the bottom inside wall coordinating to the bevel flanged segments for mating;
 5. a purifying apparatus as claimed in claim 3, wherein said lower shaft head of the valve seat has a dog lug built upon the one side at the disk;
 6. a purifying apparatus as claimed in claim 1, wherein said filter includes a filter housing and a filter element; said filter housing being a cartridge filter has a bottleneck built upon the top side for holding in the retaining socket of the mounting head, and the inlet and outlet and a slot built on coordinating to the lower shaft head and side shaft of the valve cartridge, in which said inlet and outlet are connected to the inner hollow cave of the filter housing holding a filter element in; the filter element having a hollow center is covered with an upper cap and a bottom cap separately both; said upper cap has an outlet spout upward connecting to the inside center of the filter element with the bottom end, and the up end is docked to the outlet of the valve seat;
 7. a purifying apparatus as claimed in claim 1, wherein said mounting head has bevel lugs built on the bottom inside wall coordinating to the bevel flanged segments for mating;
 8. a purifying apparatus as claimed in claim 1 or claim 2, wherein said mounting head has retaining slots built upon the inside for locating the lugs of the valve seat;
 9. a purifying apparatus as claimed in claim 1, wherein said mounting head also has a locating surface for locating the valve cartridge, on which there are a through-hole and through-slots; said through-slot extends out locating silent point built upon the side;
 10. a purifying apparatus as claimed in claim 1, wherein said mounting head and said filter have several pair of mated grooves and lugs built upon the bevel lugs and bevel flanged segments separately for gearing together. 